Notaku docs sites comes with built in search functionality
The search feature allows you to search among headings and document titles and supports fuzzy searching.
The search bar is fully accessible with your keyboard you can use the arrow buttons to navigate the results
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How search works

When clicking the search button the site download the indexing data for all headings and documents locally, this is searched on the client for matches.
Business plans websites also have full text search enabled, you can search for words in paragraphs, callouts, code and lists.
Search is still not enabled inside columns and other block types